公开(公告)号：US20070261498A1

公开(公告)日：2007-11-15

申请号：US11705561

申请日：2007-02-12

申请人： Joseph Orr ,  Scott Kofoed ,  Kevin Durst

发明人： Joseph Orr ,  Scott Kofoed ,  Kevin Durst

IPC分类号： G01L7/00

CPC分类号： G01L13/00 ,  A61B5/087

摘要： A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.

公开(公告)号：US20060117856A1

公开(公告)日：2006-06-08

申请号：US11284121

申请日：2005-11-21

申请人： Joseph Orr ,  Scott Kofoed ,  Kevin Durst

发明人： Joseph Orr ,  Scott Kofoed ,  Kevin Durst

IPC分类号： G01L7/00

CPC分类号： G01L13/00 ,  A61B5/087

摘要： A system for sensing respiratory pressure includes a portable pressure transducer configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer may removably couple with a pneumotach, in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach. Corresponding sample conduits of the portable pressure transducer removably couple with the pressure ports. The pressure ports may have sealing elements which are configured to seal against piercing members of the sample conduits upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.

公开(公告)号：US20060129054A1

公开(公告)日：2006-06-15

申请号：US11346913

申请日：2006-02-03

申请人： Joseph Orr ,  Michael Jaffe ,  Scott Kofoed ,  Dwayne Westenskow

发明人： Joseph Orr ,  Michael Jaffe ,  Scott Kofoed ,  Dwayne Westenskow

IPC分类号： A61B5/08 ,  G01N33/497 ,  F41A19/00

CPC分类号： A61B5/029 ,  A61B5/0836 ,  A61M16/0045 ,  A61M16/0833 ,  A61M2016/0036 ,  A61M2230/432 ,  G01N33/004 ,  Y02A50/243

摘要： Methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a subject include monitoring the subject's respiration during two ventilatory states. Such a method may include determining parameters of at least one of the ventilatory states based on one or more characteristics of the subject. Data obtained from monitoring the subject's respiration, such as an amount of gas present in exhaled gases and respiratiory flow, may be used to estimate respiratory or blood gas parameters, such as an amount of gas exchanged between blood and gases in the subject's lungs or an indicator of a content of the gas in the subject's blood.

摘要翻译： 非侵入性地确定受试者的心输出量或肺毛细血管血流量的方法包括在两个通气状态期间监测受试者的呼吸。 这种方法可以包括基于受试者的一个或多个特征确定至少一个通气状态的参数。 通过监测受试者的呼吸获得的数据，例如呼出气体和呼吸气流中存在的气体的量可用于估计呼吸或血液气体参数，例如受试者的肺中血液和气体之间交换的气体量 对象血液中气体含量的指标。

公开(公告)号：US20060000256A1

公开(公告)日：2006-01-05

申请号：US11157182

申请日：2005-06-20

申请人： Joseph Orr ,  Scott Kofoed

发明人： Joseph Orr ,  Scott Kofoed

IPC分类号： G01N7/00

CPC分类号： G01N1/2247 ,  G01N33/0006 ,  G01N35/00712 ,  G01N2001/2244

摘要： A test system for assessing the performance of an analyzer for a gas or an anesthetic agent includes a source of a calibration gas mixture, a valve for controlling flow of gas from the source, a low-pressure tube, a sample tube in communication with the low-pressure tube, and a connector for assembling the analyzer to the test system. The test system may also include a valve for diverting ambient air into the sample tube instead of the calibration gas mixture. Additionally, the test system may include one or more of a barometer, a flow meter, an analyzer for gas or anesthetic agents, a flow restriction system, and a relatively high pressure source. Methods for testing analyzers are also disclosed.

摘要翻译： 用于评估气体或麻醉剂分析仪的性能的测试系统包括校准气体混合物的源，用于控制来自源的气体流的阀，低压管，与 低压管和用于将分析器组装到测试系统的连接器。 测试系统还可以包括用于将环境空气转移到样品管中而不是校准气体混合物的阀。 此外，测试系统可以包括气压计，流量计，气体或麻醉剂分析器，流量限制系统和相对高压力源中的一个或多个。 还公开了测试分析仪的方法。

公开(公告)号：US20050203432A1

公开(公告)日：2005-09-15

申请号：US11120103

申请日：2005-05-02

申请人： Joseph Orr ,  Scott Kofoed ,  Dwayne Westenskow ,  Michael Jaffe

发明人： Joseph Orr ,  Scott Kofoed ,  Dwayne Westenskow ,  Michael Jaffe

IPC分类号： A61B5/026 ,  A61B5/029 ,  A61B5/08 ,  A61B5/083 ,  A61B5/087 ,  A61B5/097 ,  A61B10/00 ,  A61M16/00 ,  G01N33/00 ,  G01N1/22 ,  B32B5/02

CPC分类号： A61B5/029 ,  A61B5/0836 ,  A61M16/0045 ,  A61M16/0833 ,  A61M2016/0036 ,  A61M2230/432 ,  G01N33/004 ,  Y02A50/243

摘要： Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.

摘要翻译： 公开了使用部分再呼吸技术非侵入性地确定心输出量的装置和方法，其中该装置构造有瞬时可调的死区，以适应各种患者的呼吸能力差异。 该设备由便宜的元件构成，包括单个双向阀，其使得该设备使用起来非常简单且便宜，使得该单元可以容易地被一次性使用。 本发明的方法提供了一种新颖的方法，用于估算基于肺泡CO 2值的心输出量而不是如先前所实施的潮汐末端CO 2 2值。 还公开了一种用于计算心输出量的程序。